National Street over Willow Ck
FairButte County, South Dakota · 0.2E US85 - Belle Fourche · Structure no. 000000010099380
- Built
- 2008
- 17 years old
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete
- Length
- 29 ft
- 3 main spans
- Daily traffic
- 112
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
National Street over Willow Ck is a concrete culvert carrying National Street over Willow Ck in Butte County, South Dakota. It was built in 2008, so it is 17 years old, younger than the South Dakota average of 48.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 112 vehicles a day, roughly 2% of them trucks, projected to reach 112 by 2032. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was National Street over Willow Ck built?
It was built in 2008, making it 17 years old in 2025.
What condition is National Street over Willow Ck in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does National Street over Willow Ck carry?
About 112 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is National Street over Willow Ck?
The structure is 29 ft (8.7 m) long with a longest span of 8 ft (2.4 m).
Who owns National Street over Willow Ck?
It is owned by the Town or Township Highway Agency.